body {
    background-color: rgba(0,0,0,.5);
}
* {
    margin: 0;
    padding: 0;
}
li {
    list-style: none;
}
.message {
    width: 1000px;
    margin: 100px auto;
}
.message .top {
    width: 100%;
    height: 300px;
    background-color: #f5f5f5;
    margin-bottom: 100px;
}
.message .top h2 {
    text-align: center;
}
.message .top textarea {
    width: 800px;
    height: 200px;
    margin-left: 100px;
    resize: none;
}
.message .top .username {
    font-size: 20px;
    text-indent: 100px;
    margin-top: 15px;
}
.message .top input[type='text'] {
    width: 300px;
    height: 30px;
}
.message .top button {
    width: 60px;
    height: 30px;
    float: right;
    margin-right: 100px;
}
.message .bottom {
    
    width: 100%;
    background-color: #f5f5f5;
}
.message .bottom .img1 {
    float: left;
}
.message .bottom li {
    position: relative;
    overflow: hidden;
}
.message .bottom .content {
    float:left;
    margin-right: 10px;
    width: 850px;
    height: 60px;
    border: 1px solid purple;
    margin-top: 5px;
}
.message .bottom .img2 {
    float: right;
    margin-right: 10px;
    margin-top: 20px;
}
.message .bottom .times {
    position: absolute;
    left: 100px;
    bottom: 10px;
    width: 850px;
}
.message .bottom .times .names {
    float: right;
    margin-right: 200px;
}